flakmagnet Posted February 2 Share Posted February 2 This sounds interesting: From Jason Deegan "A groundbreaking study from the University of Geneva (UNIGE) may change the way we search for gold deposits. Researchers have discovered that bisulfide (HS-), a sulfur-based molecule, plays a crucial role in moving gold through magmatic fluids deep within the Earth. While further studies are needed, this revelation suggests that areas rich in sulfur could hold untapped gold reserves, potentially triggering a modern-day gold rush." 8 1 Link to comment https://www.detectorprospector.com/topic/27635-a-new-gold-rush/ Share on other sites More sharing options...
Gold Catcher Posted February 2 Share Posted February 2 Gold-sulfur complexes are a major contributor to gold disposition in the earth's crust. Elemental sulfur also plays a role, and both are present abundantly in hydrothermal fluids "Gold leaching from a commercial cyanide-amenable gold ore was studied at 25°C using sodium bisulfide-hydrogen sulfide solutions containing elemental sulfur. Gold extraction from the ore using 0.55 M NaSH, 4.1 atm (60 PSI) H2S, 1 g/L S8 and 26% solids by weight was about as good as the best extraction obtained by cyanidation. Maximum extraction was achieved in roughly 48 hours. Sulfur dissolves in the bisulfide solutions to form a mixture of polysulfides. Simple speciation calculations indicate that gold solubility as bisulfide complexes should be roughly ten times higher than in the absence of added zerovalent sulfur. The principal bisulfide complex is believed to be [Au(HS)2]-. Gold dissolution is favoured by increasing HS- concentration and by increasing H25 pressure. Polysulfide complexes of gold are also likely to be formed and may contribute substantially to gold leaching. Two experiments using pure gold were also performed. Up to 100 mg/L gold was dissolved in 140 hours using 0.55 M NaSH, 1 g/L added elemental sulfur and 6.2 atm H2S." https://onemine.org/documents/leaching-of-a-gold-ore-using-the-hydrogen-sulfide-bisulfide-sulfur-system 1 Link to comment https://www.detectorprospector.com/topic/27635-a-new-gold-rush/#findComment-290117 Share on other sites More sharing options...
Steve Herschbach Posted February 2 Share Posted February 2 Was it a secret that gold and sulphides are related? 6 2 Link to comment https://www.detectorprospector.com/topic/27635-a-new-gold-rush/#findComment-290134 Share on other sites More sharing options...
Gold Catcher Posted February 3 Share Posted February 3 Speaking of gold rush, this is a very entertaining documentary. Really great to watch on a Sunday evening. 2 1 Link to comment https://www.detectorprospector.com/topic/27635-a-new-gold-rush/#findComment-290194 Share on other sites More sharing options...
PeterInSa Posted February 3 Share Posted February 3 GC, Vid not available in Oz, so no Sunday evening watch. Link to comment https://www.detectorprospector.com/topic/27635-a-new-gold-rush/#findComment-290196 Share on other sites More sharing options...
Gold Catcher Posted February 3 Share Posted February 3 aww sorry that sucks! 1 Link to comment https://www.detectorprospector.com/topic/27635-a-new-gold-rush/#findComment-290197 Share on other sites More sharing options...
Northeast Posted February 3 Share Posted February 3 6 hours ago, Gold Catcher said: Really great to watch on a Sunday evening. Is it on YouTube? If it is, I didn’t realise the maker can choose where it is shown? Link to comment https://www.detectorprospector.com/topic/27635-a-new-gold-rush/#findComment-290206 Share on other sites More sharing options...
Gold Seeker Posted February 3 Share Posted February 3 2 hours ago, Northeast said: Is it on YouTube? If it is, I didn’t realise the maker can choose where it is shown? 7 hours ago, PeterInSa said: GC, Vid not available in Oz, so no Sunday evening watch. Yes it's a Youtube video, it's a "History Channel" TV show, the title of it is....maybe you can find it if you can find/watch the "History" channel on Youtube. "Modern Marvels: Gold Mines (S6, E24) | Full Episode" 1 2 Link to comment https://www.detectorprospector.com/topic/27635-a-new-gold-rush/#findComment-290209 Share on other sites More sharing options...
Gold Catcher Posted February 3 Share Posted February 3 2 hours ago, Northeast said: Is it on YouTube? If it is, I didn’t realise the maker can choose where it is shown? Perhaps you can watch it with a VPN? As Gold Seeker said, it is a TV channel, and they can perhaps have country restrictions. It's too bad, they really did a good job with a lot of original pictures and footage. GC 1 1 Link to comment https://www.detectorprospector.com/topic/27635-a-new-gold-rush/#findComment-290212 Share on other sites More sharing options...
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